package third;

import java.util.Scanner;

public class five_45 {
    public static void main(String[] args) {
        double n=0.00,m=0.00;
        double a[] = new double[11];
        Scanner input = new Scanner(System.in);
        System.out.println("Enter 10 numbers");
        for(int i=1;i<=10;i++) {
            a[i] = input.nextDouble();
            n += a[i];
        }
        System.out.println("THe mean is "+n/10);
        for(int i=1;i<=10;i++){
            m+=a[i]*a[i];
        }
        m=(m-n*n/10)/9;
        System.out.println("The standard is "+Math.sqrt(m));



    }
}
